Furnace.



R. OKRASSA.

FURNACE.

A'rPLIOATION FILED D3016, 1911.

1,034,495. Patented Aug. 6,1912.

2 SHEETSSHEET l.

wawassas mvammn v igg kro ammssA R. OKRASSA.

FURNACE.

APPLICATION FILED DEG.16, 1911.

' Patented Aug. 6, 1912.

2 SHEETS-SHEET 2 WH'NESSES INQENTGR rm RQBKRTQ UKRASS/i for i-niuhustiun (:ate with an air inl UNETED s noimmo OKRASSA. OF ANTIGUA. GUATEMALA.

FURNACE.

iaiithi as.

Specification of Letters Patent.

Patented Aug. 55. MHZ.

ApphcationiiledDecember 16. 1911. SeriatNo. 666.283.

Re if hunu'nihal i; Hum-arm Umussx. a the (ha-luau 'Ihupei-m and King hi' Prussia. mala. (huh-at .\111(Ii('1l. have invented a vertaiu haw and .Hfitl lli improvement in Fmnai-es. n! whivhthe i'ulhm'ing is a spevifivw tmr.

This im'vutivn relates to a eunstiu'etinn (it apparatus t'ia' preheating the air required ;i-imai- Uhjevt in ii-wide imthe utiiizatiou (u the 'reatust advantage of the heat eapahhi of iitillfl' ahsti'ai'ted from .ti hi mmhust of fuel.

A flu-then uhjwt. is to provide a -uusti'uvtiuu uhgl'ezli simplit'ity whii'h pl'e vnis no diflii-ulty in the nuiuutiu'g oi the hvaiei' [1H1- Muir). ivhi'eh van he hept (h-an with (he s'i'eatvst-ui' ease and \yhivh is'invapahle (if gitting nut ufi'm'der.

The apparatus is illustrated in the am'um pauyiug drawing in \\ili'(il Figure is a hmgitudinai vertieal svvti'iin' of apparatus embodying the im'entiun; Fig. 2 is a i-i'nss seetiun. on a smaiiex' shah. through the air heatm' ehamher whit-h is disposed i temmiiatu the eomhustion ehamhei' and the outlet [or the produvts 01' (uuihustim'i: Fig: 3 is a plan ofaeasiug ait'm-ding an inlet and an dulivt i'oi'jthe a'ir \\'ilit'ii- Figs. t and passes through the heater; and 5 are a horizontal seetmn'and a plan. re-

speetiioiy. showing tuhuiai' uvmhm's (if thd air heater.

Rei'ml'ing to the drawings, the fut-nave is l'()\'i(i(i with a furnace t'I'Qnt arrangod'as usual, as shown at A. and fitt'ed ivitha dumaud dead plate: B denotes the fire hai's: U duotes the haih bearer, ail the said parts heing canstruutmi and arranged as usual.

D denotes vertical tubula ni'nemhz rs disposed inarow the ends at Whh'il cummuni and which members are suspended by means of flanges from the frame F.

The tubular members magi" elongated m'oss section. their narriiw sides iSbSt-mwting the path of the gases from the combustion -hamber t0 the outlet. i

G denotes the chimney muu'nt-ed 0n the base-plate H; K denotes. the flue door and M the cleaning 1001' extending the whuh. width at. the furnace, as shown in Fig. 2.-

The tubular members are divided mm and residing at ,\uti 4ua.-Guate m i'ui-naees and has for its i I 1e hot gases at and outiet casing E (-mnpm-tments ntunuqual vapaeitv by internai depending \\ehs or iariitiuus I e-avh disphsod' miailei with the minor axis at its tuhuiai' mvulhei' (Figs. 1 sti'eu-uiuths vi their entire length and the hiifiad sides of adjai'ent tuhes are in \\'ed 1e-- shaped rib and L110O\( engagement avith each, as shown in Fig 4 and 5. whereby they are spaced apart. the i'ihand grom'e on the body of eavh tuhuiaimember hvia of the same length as the internal Weh i As aforesaid. the tuhidaimemhws i) ate ikaided-tram the frame 1 (Figs. 1 and 3) and are kept. in (lose emitaet by means 0'!" pinching pins Q (Fig. Q) .'expansi n in cantraetiou beingpermitted.

interposvd between the frame The casing E is divided into two (011% pal-talents of unequal eapaeuy att'ording an.

au-v iidQt -R and an air outlet 9. asshmvn in iFigsrl, 2 and'3, theu idths of the ahinibt.

and (if the air outlet viii-responding in the width 0f the compartments It and S in the tubular members. ahuva the and is halt The casing" E is disposed flanges of the tubular members. od to the frame F;

mid-tin easing. Culdair. enters the easingatand is blown down through the compartments in. 'heubath the webs I, in the direction of the arrow, theme upward thmu h the mimparh meats S tothe outlet- S. fiui-ing the passage of the air thl'uugzh the. tubular n emhC-i's D andt'asing I), the hot gases tromthe furuave are dii'i'vted againstthe members Daitheir junvtiou with each other, drawn down ward in the di 'ei'tion indicated. and liaaily passed upward through the ehimuey into the atnmsphgre. The air passing through the tubular inemhers D is heated hf thv hat gases, and in expanding is allowed groan-17 space in'the exits of said mvmhers and (as-- mg E,

' hat: I claim is 1.111 cnmhiuatioa with a furnaee sided with a mani'msiiun ('hamher and an outlet f()1"WS'St gases. and a (i amhmdis posed intermediate the emuhustiou vhaiu'iier and the waste gas outlet. a preheatw (iampi'isiugw'erticaltubular im-uihm's of shit:- gated ei'fiss section disposed in a row" in said inter amiiate chaiuhvi', the. broad sides at adjaeent IHOHIiHIS heiug in iii) and gi'uui'e an gag'vmeut. with each (it-hm for part of their l'inglh. and. the narrow sides at said. meat hers obstructing the path 111' the gash: than; the combustion ehamhei' in the as-in '80 a oint being i and 5) saw t'm' my outlet, downwardly extending partitions dividing said tubular membeis internally a n I which said tubular members are suspended.

and an-inlet and outlet chamber resting on sald frame and con'iprismg compartments communicatingm'ith the compartments in said tubular members.

2.. In combination with a'ffurnaee pro- 'vided with a combustion chamber and an outlet-for Waste gases, and a chamber disposed intermediate the combustion chamber and the waste gas outlet, a preh'eater-comprising \"ert-ical tubular members of' elongated cross section disposed in a row in said intermediate chamber, the broad sides of adjacent members being in rib and groove engagement with each other for part of their length, and the narrow sides of said members obstructing the path of the gases from the combustion ehamberto the outlet, downwardly extending partitions disposed parallel with the minor axes of said tubular inembers and dividing said members internally into eom mrtments of unequal capacity, said partitions extending onlypart ofthe length r of said tubular members so as topermit communication between the compartments, and belng substantially the same length as the ribs and grooves on said tubular mem burs, a frame from which said tubularmembers are suspended and an inlet and outlet chamber resting on said'frame and comprising compartments of unequal capacity communicating with the compartments in said tubular members. i

In testimony whereof I have signed in; a 

